the odyssey is a great battery, ive got one, relocated it and everything. theyre so small you can just drop it in that cargo box behind the seats. It took me about 1-2 hours to completely relocate the battery. they weigh 15lbs so thats 1/2 the stock battery weight, and less weight is less weight

oh, and be careful about leaving your lights on when the cars off... that thing dies completely after an hour or two. Ive killed it twice so far and it still works great, the car still starts great.